voici le retour, j'ai fait comme tu as écrit.
Guest.plist
daemon.plist
jacqueswidelec.plist
nobody.plist
root.plist
Jacques-Widelec:~ jacqueswidelec$ diskutil listUsers / | grep -v '.*[\^\_\].*'
USERS
-----
Disk: disk0s2
Volume: Macintosh HD1
Mountpoint: /
UID Short Name...